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United States Patent | 5,132,278 |
Stevens ,   et al. | July 21, 1992 |
A superconducting composite material comprising a superconducting element, coated on its exterior surface with noble or inert metal, in a conductive metal matrix which includes nonsuperconducting fibers. The superconducting element may suitably comprise a filament of 123 metal oxide high temperature superconductor (MOHTSC) material, or other metal oxide superconductive material. The composite structure of the invention overcomes the inherent brittleness of metal oxide-type superconductive materials and the sensitivity to flaws to which MOHTSC materials are suceptible. The noble or inert metal and conductive matrix metal may suitably be applied by MOCVD techniques. A preferred form of the superconducting article of the present invention is a tape comprising a generally planar array of superconductive filaments, for applications such as energy storage devices, power transmission and propulsion systems that require large magnetic fields, transformers, motors, and generators. Also disclosed are a method and apparatus for applying a liquid organometallic compound in atomized form to a substrate which is heated to sufficient temperature to decompose the applied organometallic compound and yield a film of deposited metal on the substrate.
Inventors: | Stevens; Ward C. (New Fairfield, CT); Kurtz; David S. (Brewster, NY) |
Assignee: | Advanced Technology Materials, Inc. (Danbury, CT) |
Appl. No.: | 523056 |
Filed: | May 11, 1990 |
Current U.S. Class: | 505/231; 428/614; 428/632; 428/930; 505/236; 505/701; 505/704 |
Intern'l Class: | H01B 012/10 |
Field of Search: | 428/614,930,632 505/1,701,704 |
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Foreign Patent Documents | |||
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TABLE I ______________________________________ Process Parameter Indentity/Condition ______________________________________ carrier gas air carrier gas flow rate 50 cubic centimeters/min. pressure 1 Torr temperature of platinum 175.degree. C. acetylacetonate deposition temperature 275.degree. C.-320.degree. C. running time 10-12 minutes starting amount of platinum 0.4 grams acetylacetonate ______________________________________